TCP SYN (p0f)

4:108+20:0:1452:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-07-12 19:58 · last seen 2026-09-13 17:05 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 5/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL108+20
Options length0
MSS1452
Window size65535
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+
Payload class0

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.13
t13d2913h1_723694b0fccc_5671b5df50298
t13d1617h2_86a278354501_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.3, +10 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d201200_2b729b4bf6f3_e24568c0d4401

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr16heil_94fdc06e0694_000000000000_0000000000009
ge20nr16thth_94fdc06e0694_000000000000_0000000000004
ge11nr11heil_835281d8e5d9_000000000000_0000000000002
ge11nn11heil_835281d8e5d9_000000000000_0000000000002
ge20nn11ruru_3901d4197baf_000000000000_0000000000001
ge11nn11thth_835281d8e5d9_000000000000_0000000000001
ge11nn11dede_835281d8e5d9_000000000000_0000000000001
ge11nr11dede_835281d8e5d9_000000000000_0000000000001
ge11nr11enca_835281d8e5d9_000000000000_0000000000001
po11nn07enae_7d361e250c48_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog.13
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1452_823

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 14; 23054RA19C) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.363
Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.01
Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.11
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.11
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Linux; Android 14; SM-S921B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Linux; Android 15; SM-F946B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Linux; Android 13; Redmi Note 12) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361

Country

fingerprintco-occurrences
IL · Israel13
TH · Thailand5
DE · Germany2
CA · Canada1
RU · Russia1
AE · United Arab Emirates1

Network (ASN)

fingerprintco-occurrences
AS6810 · "Bezeq"- THE ISRAEL TELECOMMUNICATION CORP. LTD.13
AS133481 · AIS Fibre5
AS6805 · Telefonica Germany GmbH & Co.OHG2
AS5384 · Emirates Internet1
AS40993 · MTS PJSC1
AS6407 · Primus Telecommunications Canada Inc.1